body {
    text-align: center;
    font-family: Arial, sans-serif;
}

.game-container {
    width: 410px;
    height: 410px;
    margin: 20px auto;
    position: relative;
    background: #bbada0;
    padding: 10px;
    border-radius: 10px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-gap: 10px;
}

.tile {
    background: #cdc1b4;
    border-radius: 3px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 20px;
    font-weight: bold;
    color: #776e65;
}